Matthew Rhys probably wouldn't make as good of a spy as his on-screen counterpart.

While his character manages to keep up a fake identity and two marriages on FX's The Americans, Rhys says it's something he'd never be able to do himself.

"I get anxiety just playing a fictitious part on a drama series," the actor, who plays a KGB spy posing as an American, told reporters during a recent conference call. "When I think of those men who actually live a duplicitous life and have multiple marriages or partners, I don't know how they do it."

That much was clear in the very first scene of The Americans on Wednesday night, as Keri Russell was shown in an extremely compromising position with a Department of Justice agent. Long gone is that sweet college girl from the '90s.

In the new FX drama, Russell, 36, and Matthew Rhys play suburban parents who are actually KGB agents, living in the early-'80s Washington, D.C.